Interestingly, I'm running around -2.3 or -2.4° front camber with Toyo Proxes RRs (newish R-comp, semi-slick, 40 treadwear rating) on the track, and I've been seeing more wear on the
inside of the tread. Wear is visible on the outside shoulders where the tire rolls over a bit in cornering, but not down beyond the sidewall triangle markers. That's the expected part. But what seems weird is that the tread-depth holes or dots on the tread surface show significantly more wear on the inside portion of the tread surface vs. the outer portion.